<html>
<head>
<style>
#bg {
	position:fixed; 
	top:0; 
	left:0; 
	width:100%;
	height:100%;
	z-index: -1;
}
</style>
</head>
<body>
<img src="images/HTML5-logo.svg" id="bg" alt="HTML5 logo">
</body>
</html>